Temperature and Shock-Position Sensor for High-Pressure, Oxygen Systems
Temperature and Shock-Position Sensor for
High-Pressure, Oxygen Systems
Aerodyne Research, Inc.
45 Manning Road
Billerica, MA 01821
Kurt D. Annen
Sensors will be developed to investigate the causes of impact-initiated ignition
in high-pressure oxygen lines. This problem arises due to the adiabatic compression
of the residual oxygen in a line when it is opened to the high-pressure oxygen source.
A nonintrusive, Rayleigh scattering technique will be applied to measure the temperature
at a rate that can resolve the adiabatic compression process. This sensor would be
located in an end cap having the same diameter as the oxygen line to avoid discontinuities
in area. Based upon the measurement of changes in oxygen density by the change in
magnetic permeability, the new sensor will determine the shock velocity and location
from which the temperature distribution in the line can be determined. Phase I will
consist of a laboratory demonstration of the Rayleigh scattering measurements in
high-pressure lines, an analytical modeling effort that approximately describes the
compression processes, and the preliminary design of the Rayleigh scattering and
shock position sensors.
Potential Commercial Application:
Potential Commercial Applications: The oxygen density measurement technique may provide
a means of non-invasive monitoring of oxygen content or contamination of gases.